#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>

int main()
{
	int a;
	scanf("%d", &a);
	int count = 0;
	for (int i = 0; i < 32; i++)
	{
		if (( a - a ^ 1 ) == -1)
			count++;

		a >> 1;
	}
	printf("%d", count);
	return 0;
}